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基于单片机控制红外报警系统.doc
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基于单片机控制红外报警系统.doc
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毕业设计
题目:基于单片机控制红外报警系统
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[ 摘 要 ] :人们生活水平不断提高,对私有财产的保护意识在不断的增强,
因而对防盗措施提出了新的要求。 本设计就是为了满足预防抢劫、盗窃等意外
事件的需要而设计的果园防盗报警系统。
目前市面上主要有压力触发式防盗报警器、开关电子防盗报警器和压力遮
光触发式防盗报警器等各种报警器,但这几种比较常见的报警器都存在一些缺点。
本系统采用了热释电红外传感器,它的制作简单、成本低,安装比较方便,而且
防盗性能比较稳定,抗干扰能力强、灵敏度高、安全可靠。这种防盗器安装隐蔽,
不易被盗贼发现。同时它的信号经过单片机系统处理后方便和 PC 机通信,便于
多用户统一管理。
本设计主要包括硬件和软件设计两个部分。硬件部分包括单片机控制电路、
红外探头电路、驱动执行报警电路、LED 控制电路等部分组成。处理器采用 51
系列单片机 AT89S51。整个系统是在系统软件控制下工作的。软件部分可以划分
为以下几个模块:数据采集、键盘控制、报警和显示等子函数。
[关键词]:单片机、红外传感器、
数据采集、
报警电路。
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Infrared burglar alarm design controls which based
on the monolithicintegrated circuit
Abstract : The people living standard enhances unceasingly, to private property protection
consciousness in unceasing enhancement, thus set the new request to the security measure. This
design is to satisfy the prevention to rob the orchard security alarm system which, the burglary and
so on accident needs to design.
At present in the market condition equips mainly has the pressure totouch the hair
style burglar alarm, the switch electron burglar alarmand the pressure shields light the
hair style burglar alarmand so on each kind of alarm apparatus, but these kind of quite
commonalarm apparatuses all have some shortcomings. This system used hashotly
released the electricity infrared sensor, its manufacturesimple, cost low, installm the
antijamming ability strong, thesensitivity high, safe was reliable. This kind of security
installmenthiding, was not easily discovered by the bandits and thieves.Simultaneously its
signal after monolithic integrated circuit systemprocessing the convenience and P the C
machine correspondence, isadvantageous for the multiuser unification management.
This design designs two parts including the hardware and software. Thehardware
partially including the monolithic integrated circuit controlcircuit, infrared pokes head in the
electric circuit, the actuationexecution alarm circuit, the LED control circuit and so on the
partialcompositions. The processor uses 51 series monolithic integratedcircuits AT89S51,
the overall system is works under the systemsoftware control. The system program may
divide into following severalmodules: The data acquisition, the keyboard control, reports to
thepolice with the demonstration small steelyard function.
Key words: AT89S51 monolithic integrated circuit, infrared sensor,data acquisition,
alarm circuit.
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目 录
1. 绪论.........................................................1
1.1 前言..................................................1
1.2 设计任务与要求....................................... 1
2. 热释电红外传感器概述.........................................2
2.1 PIR 传感器简单介绍 ....................................2
2.2 PIR 的原理特性........................................2
2.3 PIR 结构特性..........................................3
3. AT89S51 单片机概述 ...........................................6
3.1 AT89S51 单片机的结构 ..................................6
3.1.1 管脚说明 .........................................8
3.1.2 主要特性.......................................11
3.1.3 振荡器特性.....................................11
3.2 AT89S51 单片机的工作周期 .............................12
3.3 AT89S51 单片机的工作过程和工作方式 ...................13
3.4 AT89S51 的指令系统 ...................................16
4. 方案设计....................................................18
4.1 系统概述..............................................18
4.2 总体设计..............................................19
4.3 系统硬件选择..........................................19
4.4 硬件电路实现..........................................20
4.5 软件的程序实现........................................21
5. 结论概述....................................................27
5.1 主要结论..............................................27
5.2 结束语................................................27
致谢..........................................................28
参考文献 .....................................................29
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